yawn

Human Anatomy, Physiology, and Medicine. Anything human!

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lara
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yawn

Post by lara » Sat Dec 10, 2005 7:25 am

y do one feels like yawnin' on seein' someone else doin' it??

chemrox
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Post by chemrox » Sat Dec 10, 2005 10:15 am

Ok... here is what a yawn is:
btw.. these are all theories.. so some could be false... 8)

1. sometimes body doesn't get enough oxygen so to get enough of it, we have to breathe deep...
2. sometimes it is just a reflex of tiredness
3. other researches say that yawn stretches the lungs and that helps keep the lungs lubricated, so that they don't collapse. so if we didn't yawn taking a deep breath would become harder and harder.
4. the last reason is that it is plain contagious...

how many time did you yawn while reading this... :?:

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MrMistery
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Post by MrMistery » Sat Dec 10, 2005 2:24 pm

Haha... twice...
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

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victor
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Post by victor » Sun Dec 11, 2005 1:16 pm

hay, before reading this post I'd been yawning for many times....hoaahhhmmmm... :lol:
Q: Why are chemists great for solving problems?
A: They have all the solutions.

hurly
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Post by hurly » Sun Dec 11, 2005 1:25 pm

I saw this on Myth Busters once.
They did the experiment.

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amoebapower
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Post by amoebapower » Mon Dec 12, 2005 9:50 pm

i started to read this and i yawned

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biostudent84
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Post by biostudent84 » Tue Dec 13, 2005 8:13 am

What you are experiencing when you feel the need to yawn when you see others yawn is called "social facilitation." Social facilitation is a process by which one member of a population does something, the rest do the same thing. This is also experienced when you see someone throwing up. You get the feeling like YOU have to throw up. While this is the reason, why yawning is controlled by social facilitation (contagious behavior) is yet unknown

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MrMistery
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Post by MrMistery » Wed Dec 14, 2005 7:15 pm

hearding instinct :lol: :lol: :lol:
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

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